Hexquadtrium (Hqt)
Hexquadtrium is the systematic name of the theoretical 643. element in the periodic table with a symbol of Hqt and atomic number of 643. Hexquadtrium, also known as element 643, has վեցհարյուր քառասուներեք protons in its nucleus, and վեցհարյուր քառասուներեք electrons in its shells.